Feature: repeat/count flags #281
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+ Adds a tag `repeated` which allows `-v -v -v`, `-vvv`, or `-v=5` to set an `int` field. + Field type must satisfy `reflect.CanInt()`. + `spec` gains `noarg` (forces cardinality of 0) and `repeated` flags. + Short option must be provided if the field is more than one character long. + Reasonably comprehensive tests. + Maybe allow defaulting the short option to the first character of the field name if not provided?
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Support for
-v -v -v,-vvv, and-v=3options on anint-like field.Fixes: #213
Fixes: #170